diff --git a/manifest.json b/manifest.json
index 111dd6c..6eb1cfa 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,8 @@
     {
       "src": "static/dist/images/apps/precomposed-128.png",
       "type": "image/png",
-      "sizes": "128x128"
+      "sizes": "128x128",
+      "purpose": "any maskable"
     },
     {
       "src": "static/dist/images/apps/precomposed-256.png",